Riddle for grain-cleaners.



No. 744,516. PATENTBD NOV. 17, 1903. E.BARLY.

RIDDLE FOR GRAIN CLEANERS. APPLICATION I-ILED APR. 17, 1902.-

N0 MODEL.

I c. In: Nnnms mtiiymwnomurnn wnsamamn. n

UNITED STATES Patented November 17, 1903.

PATENT. OFFICE.

RIDDLEIFOR GRAIN-CLEANERS.

SPECIFICATION forming part of Letters Patent No. 744,516, dated November 17, 1903.

Application filed April 17, 1902. Serial No. 108,292. (No model.)

reference to the accompanying drawings, in

which- Figure 1 is a vertical section through the riddle. Fig. 2 is a perspective view.

In the construction of my improved riddle I have shown sides A and plates 2, extending transversely from one side to the other, having rear edges upturned, as shown at 3. These plates are set in the form of steps, each anterior plate being slightly below the level of the one behind and sufficiently in advance of it to leave an open space vertically between the anterior portion of one plate or surface and the posterior portion of the adjacent one. The riddle is so disposed that the plates incline downwardly from rear toward the front, as shown. Each of the plates has a series of pins 4 projecting from its anterior edge and:

extending over the next adjacent surface in front. These pins appear approximately parallel looking down upon them from above; but viewed from in front or sidewise the alternate pins are bent respectively upward and downward, which gives a staggered effect to the outer ends. This separates the pins at the outer ends, so that the spaces between them increasefrom the edge of the plate outwardly, the pins being smooth, and thus slightly divergent, and chaff and waste passing over them will not be entangled or clogged upon the pins, but will be discharged over the ends upon the next plate and set of pigs below, and so on, passing from one to the ot er.

This riddle is properly suspended and is given a shaking motion by any well-known or desired contrivance for the purpose moving transversely. The grain, which has been already separated in a preliminary apparatus from the straw and heavier waste, is delivered through a suitable hopper or chute, as at 0, upon the uppermost of the surfaces. Any suitable fan or other blast provides an air-current, which is discharged from the rear upwardly and forwardly through the spaces between the surfaces and between the pins.

The clean grain falling through this riddle is received upon a return-board or equivalent device, as B.

This riddle takes the place of several screens and is removably placed in any suitable shoe, which is suspended and connected with eccentrics or the like, by which shaking motion is transmitted.

Having thus described my invention, what I claim, and desire to secure by Letters Pat- 6l1l7, lS' l The combination in a grain-cleaning device of a riddle consisting of side frames, transverse plates or surfaces extending between said frames, each successive plate being located below and in advance of the front edge of the preceding one having upturned rear edges and inclining downwardly therefrom, wire pins projecting from the front edges over the intermediate spaces, and above the succeeding plates, said wires being alternately bent upward and downward so as to provide an increasing distance between them from the base to the discharge ends, andmeans for delivering material to be separated upon the uppermost of said plates.

In witness whereof I have hereunto set my hand. 7

EDWARD EARLY.

Witnesses:

S. H. NOURSE, JESSIE O. BRODIE. 

